I can't resist this. My son-in-law took this shot of his and my daughter's kids. It's a second marriage for both of them, and they both had kids when they married. Take a look at this photo. Which three kids "belong" to my son-in-law, and which two are my daughter's? Which one is a boy? (Click on the photo to get a better look if you need to.)
I do believe there'll be a prize for anyone who can figure it out correctly!
After I went to bed last night I realized I'd made this even more difficult, maybe Too difficult, by not putting in pictures of my daughter and son-in-law. So here's the same kids, same day, same outfits, but with the parental units. If you've already made a guess, you're free to try again! (If you decide you guessed wrong. I'm not tellin' yet.) Again, clicking on the photo should give you a closer look.